21006986

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1499}}^1$

素因数の和:1539

約数の個数: 48

約数和(自身を含む): 43092000

約数和(自身を除く): 22085014

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 49, 77, 91, 98, 143, 154, 182, 286, 539, 637, 1001, 1078, 1274, 1499, 2002, 2998, 7007, 10493, 14014, 16489, 19487, 20986, 32978, 38974, 73451, 115423, 136409, 146902, 214357, 230846, 272818, 428714, 807961, 954863, 1500499, 1615922, 1909726, 3000998, 10503493, 21006986]

約数ペア:

[(1, 21006986), (2, 10503493), (7, 3000998), (11, 1909726), (13, 1615922), (14, 1500499), (22, 954863), (26, 807961), (49, 428714), (77, 272818), (91, 230846), (98, 214357), (143, 146902), (154, 136409), (182, 115423), (286, 73451), (539, 38974), (637, 32978), (1001, 20986), (1078, 19487), (1274, 16489), (1499, 14014), (2002, 10493), (2998, 7007)]